The hardcover version of a book weighs twice as much as its paperback version. The hardcover book and the paperback together weigh 4.2 pounds. Which system of equations can be used to find h, the weight of the hardcover book, and p, the weight of the paperback? h = p − 4.2 h = 2p
h = 4.2 − pp = 2h
h = p − 4.2p = 2h
h = 4.2 − ph = 2p

D

Step-by-step explanation:

The last one

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the y will be in still but your answer will be y x 3

step-by-step explanation:

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answer: the distance

step-by-step explanation:

to calculate the distance d of a line segment with endpoints (x1, y1) and (x2, y2) use the formula d (x2 x1)2 (y2 y1)2. to calculate the midpoint of a line segment with endpoints (x1, y1) and (x2, y2) use the formula